my DH wants to get a nut driver set for working on laptops. He helps put family members alot, but doesn't bring tools from work home. So, the home store has them but he says they wouldn't fit in a computer case. So, I found some online at a tech equipment site, my problem is do I buy a set that is in "inch" sizes(ie: 1/16") or metric "cm/mm" sizes. I am thinking that more things come metrically (is that a word?) sized now. Any advice is greatly appreciated !!